Market Street Culvert Replacement

Market Street is now open!

Location

Market Street in South Burlington.

Project Description

View of the upstream end of the previous Market Street culvert.

The previous culvert that carried Tributary 3 of Potash Brook under Market Street was undersized relative to it’s upstream drainage area. Culverts that are undersized can cause flooding and property damage during high flow events. They can also cause scour and erosion of streambanks in the area surrounding the culvert. This erosion can have negative impacts on the stream’s water quality. In addition, culverts that are not properly sized and installed can reduce the ability of aquatic organisms to move freely between upstream and downstream habitat.

The previous Market Street culvert consisted of a 4-foot diameter by 112-foot long reinforced concrete pipe with concrete walls on both ends. This culvert was replaced with a 12-foot wide by 5-foot high by 64-foot long bottomless arch culvert supported by a cast-in-place concrete substructure. The new culvert has sufficient capacity to convey flow from upstream areas and the natural bottom will facilitate passage of aquatic organisms.